benchmark: added initial benchmark tool

Author: kamikaze

benchmark.py

@@ -0,0 +1,39 @@
+import pyb
+
+import display
+from display.ssd1322 import SSD1322
+
+
+def send_buffer(disp, n=1000):
+   disp.framebuf.fill(0)
+   start = pyb.millis()
+
+   for i in range(n):
+       disp.send_buffer()
+
+   return pyb.elapsed_millis(start)
+
+
+def text_screen(disp, n=1000):
+    disp.framebuf.fill(0)
+    start = pyb.millis()
+
+    for i in range(n):
+        disp.framebuf.fill(0)
+
+        for y in range(64 // 8):
+            disp.framebuf.text('BENCHMARK', 0, y*8, 0xF)
+
+        disp.send_buffer()
+
+    return pyb.elapsed_millis(start)
+
+
+def run_display_benchmark(disp=None):
+    disp = display.create_spi_display(SSD1322, 256, 64)
+    
+    t1 = send_buffer(disp)
+    t2 = text_screen(disp)
+
+    print(t1, t2)
+